238516871 has 2 divisors, whose sum is σ = 238516872. Its totient is φ = 238516870.

The previous prime is 238516867. The next prime is 238516931. The reversal of 238516871 is 178615832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238516871 - 2² = 238516867 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238516841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119258435 + 119258436.

It is an arithmetic number, because the mean of its divisors is an integer number (119258436).

Almost surely, 2^238516871 is an apocalyptic number.

238516871 is a deficient number, since it is larger than the sum of its proper divisors (1).

238516871 is an equidigital number, since it uses as much as digits as its factorization.

238516871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 238516871 is about 15443.9914206140. The cubic root of 238516871 is about 620.1637366715.

The spelling of 238516871 in words is "two hundred thirty-eight million, five hundred sixteen thousand, eight hundred seventy-one".